<style>
    h2 {color: blue;}
</style>
<h2>CatPhotoApp</h2>
<main>

    <a href="#"><img src="https://ofa83l6ao.qnssl.com/relaxing-cat.jpg" alt="一只仰卧着的萌猫"></a>

    <p>猫咪最喜欢的三件东西：</p>
    <ul>
        <li>猫薄荷</li>
        <li>激光笔</li>
        <li>千层饼</li>
    </ul>
    <p>猫咪最讨厌的三件东西：</p>
    <ol>
        <li>跳蚤</li>
        <li>打雷</li>
        <li>同类</li>
    </ol>

    <form action="/submit-cat-photo">
        <label><input type="radio" name="indoor-outdoor">室内</label>
        <label><input type="radio" name="indoor-outdoor">室外</label><br>
        <label><input type="checkbox" name="personality">忠诚</label>
        <label><input type="checkbox" name="personality">懒惰</label>
        <label><input type="checkbox" name="personality">积极</label><br>
        <input type="text" placeholder="猫咪图片地址" required>
        <button type="submit">提交</button>
    </form>
</main>